Improvement in lamps



LANG L GILMAN.

y Latnp.

Patented MalyA 9, 1865 Imvm'a 7" w/ 2M Wz'netsse s N. PETERS.Fhowlimogmphlr, Washington, D C.

' t 't llNiTnn STaTns PATENT @retort EDWARD M. LANG, 0F WESTBBOOK, ANDISAIAHGILMAN, 0F PORTLAND, ME., ASSIGNQRS TO THEMSELVES, JOS. L.VINSLOW, AND E. HERSEY.

IMPROVEMENT IN LAM PS.

Specification forming part of Letters Patent No. 47,681, dated May 9,1865.

T0 all whom it may concern:

Be it known that we, EDWARD M. LANG, of the town of Westbrook, andISAIAH GILMAN, of the city of Portland, in the county of Gumberland,State of Maine, have invented a new and Improved Burner; andwe do herebydeclare the following to be a full and exact description of theconstruction of the same, reference being had to the annexed drawings,making a part of this specification, in which- Figure lis a verticalsection transversely to the wick-tube, and Fig. 2is a vertical sectionin the' direction of the width of the tube. Fig. 3 is a plan of theburner.

Similar letters referring to like parts in all the drawings, we will saythat our invention consists in a combination as well as i`n a peculiararrangement of a wick-tube, two cones or air-deectors, a metallicannular conduit, and certain heat-conductors and conesupporters, ashereinafter specified; and our invention further consists in thecombination and arrangement of a removable truncated hollow cone orjacket, (made as hereinafter explained,) with the two cones-orair-deflectors, the annular conduit or ring, and the wick-tube, whenarranged and connected together essentially in manner as hereinafter setforth.

From the above it will be seen that our invention involves theemployment of the metal conductors D D, for the purpose of conveying theheat from the wick-tube E to the outer cone, A A, either directly orthrough the medium of any support to said cone, which medium or supportas shownin the drawings is the metal ring G C, thereby causing a morerapid supply of heated air to that. part of the flame passing betweenthe two cones, A A B B-the enlarged mouth and sloping sides of the outercone being of the proportions and form (we believe) as bestto direct andkeep up the necessary supply of heated air to the flame. The innercone,B B, may be attachedV directly to the outer cone, A A, or to the metalring C G, by pieces of metal D D,or by any `other method that will holdthe two cones relatively as arranged and allowas little transmission ofheat from the inner cone to the outer cone aspossible.

We attach much importance to the proportions of distances relativelybetween thetwo cones and of the inner cone to the top of wick-tube, inconnection with the relative tive of important advantages in spreadingthe flame of the wick and directing the air thereon in order to preventit from smoking.

The metal conductors serve a twofold purpose, inasmuch as they rob thewick-tube of Y the heat that otherwise would go to the collar of thelamp, where it would be injurious, and convey it to the outer cone, A A,where it will do good. We do not limit ourselves to the number or sizeof theconductors D D.

We also employ in connection with the outer cone, A A, and other parts,as hereinafter decribed, a jacket, F F, in the form of the frustrum of acone, or any other form not too contracted, and it may be constructed ofany material,the object of said j acket bein gfor the better controlmentof the llame when the lamp is in motion, the operation of the burnerbeing just as perfect without it when at rest. The jacket is removableat will, not being fastened to cone. The aperture to the jacket beingsmall enough not to slipenti rely over the outer cone, the weight of thejacket keeps it properly secured to the burner without the use of aspecial contrivance.

We make no claim to the employment of two cones or air-deflectors with awick-tube. Neither do we claim simply makingV the orifice or mouth ofthe inner cone of less width than that of the outer cone.

What we claim as our invention or improvements is as follows 1.rltheabove-described combination, as well as the arrangement of thewick-tube E, the two cones, AB, the metallic annular conduit C, theconductors D D, land the supports D D, or the equivalent of the latter.

2. The combination of the removable jacket lcone at its middle or itsexpansion in opposite F with the two cones, A B, the ring` O, and tionstherefrom, in mnner substantially as theWick-tube, arranged andconnected subrepresented and hereinbefore described.

sta-ntially as specified.

3. The contraction of the mouth of the inner G' directions therefrom, incombination with the lVitnesses: expansion of the month of the outercone at DANL. WINSLOW, its middle or its diminution in opposite direc- JoI-IN B. LITTLEFIELD.

